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  4. Board Feet Calculator
Lumber Math< 1 minFree to use

Board Foot Calculator – Lumber BF & Hardwood Cost

Enter nominal thickness, width, length, and piece count — board feet per piece and total solve live.

in

Nominal thickness.

in

Nominal width.

ft
pcs
$
$/BF

Supplier's BF rate for this species.

Total board feet

80

BOARD FT

Bill of materials+0% waste

MaterialNetWasteOrder

Board feet

2 × 6 × 8 ft

Net 8 BF/pc × 10 pcs · Waste —

8 BF/pc × 10 pcs—80 BF

Cost projection

80 BF × $1.85$148.00
Total$148.00

Saved on this device · No account · No cloud

Total board feet

80 BF

About this tool

Board feet = thickness × width × length ÷ 12, using nominal inches and feet — a 2×6×8 is 2 × 6 × 8 ÷ 12 = 8 BF.

How to use

Enter nominal thickness, width, length, and piece count — board feet per piece and total solve live.

How the math works

Board-foot pricing is the standard for hardwoods and rough lumber; dimensional softwood is usually priced per piece.

One board foot equals 144 cubic inches — the volume of a 1 in × 12 in × 12 in board.

Always round up piece counts; mills sell whole boards, not fractions.

Formula

BF = T × W × L ÷ 12

Common questions

▸How do you calculate board feet?

Board feet = thickness x width x length / 12, using nominal inches and feet. A 2x6x8 is 2 x 6 x 8 / 12 = 8 board feet.

▸What is a board foot?

144 cubic inches of lumber — the volume of a 1-inch-thick, 12-inch-wide, 12-inch-long board. It is the standard pricing unit for hardwoods and rough lumber.

▸How many board feet in a 2x6x8?

2 x 6 x 8 / 12 = 8 board feet per piece. Enter the piece count and the calculator totals the job and always rounds piece counts up, since mills sell whole boards.

▸Do I use nominal or actual dimensions?

Nominal — board-foot pricing is based on the named size (2x6), not the actual 1.5 x 5.5 inches.

▸When is board-foot pricing used?

It is the standard for hardwoods and rough lumber. Dimensional softwood is usually priced per piece instead.

Keep estimating

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